Running update-desktop-database gives the error Error in file "/usr/share/applications/fedora-gspectrum-0.10.desktop": "chemical/x-jcamp-dx" is an invalid MIME type ("chemical" is an unregistered media type)
This happens with desktop-file-utils-0.16-1.fc13.x86_64 gnome-chemistry-utils-0.10.12-2.fc13.x86_64
The same problems with Error in file "/usr/share/applications/fedora-gchem3d-0.10.desktop": "chemical/x-xyz" is an invalid MIME type ("chemical" is an unregistered media type) Error in file "/usr/share/applications/fedora-gchem3d-0.10.desktop": "chemical/x-mdl-molfile" is an invalid MIME type ("chemical" is an unregistered media type) Error in file "/usr/share/applications/fedora-gchem3d-0.10.desktop": "chemical/x-pdb" is an invalid MIME type ("chemical" is an unregistered media type)
*** This bug has been marked as a duplicate of bug 587566 ***